DESCRIPTION OF BLOCK DIAGRAM
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1. Power Supply Block (LIPS)
This Block Generates DC Voltage (5V,15V) to Main Control system from AC Power (100-240V, 50/60Hz, 1.0A)
Also it has the inverter function converts input voltage to AC Rms value for the LCD lamp.
2. DC/DC Converter Block
DC/DC Converter convert the input 5V, 15V to proper 3.3V, 5V, 8V, 12V for Main control system.
For shooting heat trouble, we use the DC/DC converting IC
3. Audio Amplifier
This block is composed of TPA3005D2 and peripheral device.
The function of the audio amplifier is that to amplify audio L / R signal transmitted from audio decoder.
The audio signal is amplified according to pre-defined DC volume control curve.
4. Audio / Video / IF Decoder / Scaler
This block is composed of LOC1 and peripheral devices.
1) Video Decoder
This Block Selects input Video signals (like CVBS, Y/C) and output RGB signal.
On decoding, We can control signal like Contrast, Brightness, Sharpness, Color, Tint signals including
Adaptive Comb Filter.
2) Audio Decoder
This Block analyzes audio input signal through A/V Jack and PC audio and Tuner IF.
The analyzed signals transmitted to audio amplifier.
On decoding, We can control signal like Bass, Treble.
3) IF Decoder
This block can change IF signal to audio and video signal that transmitted to Video/Audio decoder.
4) Scaler
This IC includes A/D Converter and LVDS Transmitter.
This IC is directly inputted Analog signal and transmits it to LCD Module.
5) Micom
This block controls each IC through IIC communication line.
5. Switch IC (PI3V512QE)
It is composed of PI3V512Q.
This IC selects between D-sub RGB signal and LOC1 RGB signal, and it transmits the selected signal to
video signal processor.
6. Tuner (included Tuner Pack (TN200))
Micom controls this through IIC Line.
Tuner makes IF and transmits IF signal to LOC1.
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